CChessStats

Regional Centro-Oeste Senior O50 STD 2025

Open SwissStandard

7 players participated in this 5-round tournament, held from 26 Jun 2025 to 29 Jun 2025 in Goiania GO, Brazil. Top 10 Elo average was 1861, and top seed was Paulo Santanna (🇧🇷 BRA, 2022).

Jairo Franca Junior (🇧🇷 BRA, 1902) won with 4.0/5, ahead of Raimundo Nascimento Felix (3.0) and Paulo Santanna (2.0). Franca Junior led wire-to-wire.

The biggest upset came in round 3: Jairo Franca Junior (1902) beat Paulo Santanna (2022), a +120-point gap.

Location
🇧🇷Goiania GO, Brazil
Dates
26 Jun 2025 → 29 Jun 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 5 rounds
Top seed
🇧🇷Paulo Santanna2022
Avg top 10
1,861
Participants
7
Federations · 1 represented
🇧🇷Brazil×7
Top 3

How it unfolded

Top 6 · 5 rounds

Jairo Franca Junior led from R1; +1.0-point edge over the runner-up.

Co-leaders
1
1
1
1
1
1.52.545R1R2R3R4R5
R1–R5 · LEAD HELD

Jairo Franca Junior never relinquished the lead after R1; final gap +1.0 over the runner-up.

R4 · HEAD-TO-HEAD · WINNER VS 2ND

Jairo Franca Junior drew with Raimundo Nascimento Felix (Black).

R1–R3 · WIN STREAK

Jairo Franca Junior won 3 in a row (R1–R3).

Key matchups · top 4

Head-to-head between the four finishers

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Franca Junior, Jairo1902BRA+6B+5N+3B=2N=7B4.07.07.55.752064+20.2
2Felix, Raimundo Nascimento1897BRA=3N=4B+6N=1B=5B3.08.59.55.251961+9.4
3Santanna, Paulo2022BRA=2B+7N1NF=6B2.08.58.52.501787-22.2
4Sergio, Claudio Santos2006BRAF=2N+5BFF1.55.55.52.502069+3.0
5Pires, Washington Gabriel1854BRAF1B4N=6B=2N1.010.011.02.001673-18.4
6Olivo, Anibal Ribeiro1660BRA1NF2B=5N=3N1.010.010.01.501726+5.0
7Hitiro Matsunaga, Pedro1687BRAF3BFF=1N0.57.57.52.001770+3.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets